Abstract: A motor vehicle has an internal combustion engine mounted in a central tunnel of the vehicle floor pan. The internal combustion engine comprises an engine block assembly having a lower end closed by an oil pan and an upper end extending at an angle ? from a rear of the engine block assembly to a front thereof. An engine block closes the upper end and defines a crankcase that is configured to house a crankshaft for rotation therein. A cylinder housing assembly is reclined from vertical, towards the rear of the engine block, about an axis of the crankshaft by an angle ?. At least a portion of the cylinder housing assembly and the crankcase are disposed in the central tunnel of the vehicle floor pan.

Abstract: An engine assembly includes an engine block having a first bank of cylinders and a second bank of cylinders. A crankshaft is supported by the engine block and is configured to be driven by torque due to combustion energy in the first and second banks of cylinders. A first set of valves is operable to control air flow into and out of the first bank of cylinders. Camshafts driven by the crankshaft are operatively connected to the first set of valves to control opening and closing of the first set of valves. A second set of valves is operable to control air flow into and out of the second bank of cylinders. A controller is operatively connected to the second set of valves and is configured to vary at least one of lift, duration, and timing of the second set of valves based on commanded torque at the crankshaft.

Abstract: An inlet manifold comprises a plenum, a pair of intermediate runners, and two pair of terminal runners. A common EGR passage is in fluid communication with a pair of EGR injectors, each being in fluid communication with a respective intermediate runner. Each intermediate runner receives a split stream of EGR from its respective EGR injector and combines the split stream of EGR with a split stream of inlet air from the plenum to form an EGR-loaded stream. Each intermediate runner is in fluid communication a pair of terminal runners for distributing its EGR-loaded stream among the terminal runners.

Abstract: An internal combustion engine comprises a cylinder configured to operate on a four-stroke combustion cycle, a dedicated EGR cylinder configured to operate on a two-stroke combustion cycle and an EGR supply conduit extending between an exhaust port of the dedicated EGR cylinder and the cylinder configured to operate on a four-stroke combustion cycle for delivery of exhaust gas exiting the dedicated EGR cylinder to the cylinder configured to operate on a four-stroke combustion cycle for combustion therein.

Abstract: A system includes a fuel cutoff module and a cylinder deactivation module. The fuel cutoff module generates a fuel cutoff signal when a deceleration fuel cutoff condition occurs, wherein fueling to M cylinders of an engine is disabled based on the fuel cutoff signal, and wherein M is an integer greater than or equal to one. The cylinder deactivation module deactivates the M cylinders in response to the fuel cutoff signal.

Abstract: An engine assembly may include a cylinder head and a fluid control assembly. The cylinder head may include first and second walls opposite one another and extending from a base region defining a cavity. The cylinder head may define a first oil passage extending through an interior surface defining the cavity. The fluid control assembly may include a first oil control valve and a first conduit. The first oil control valve may be fixed to the base region and may define a first port in fluid communication with the first oil passage and a second port in fluid communication with a second oil passage in the cylinder head. The first conduit may extend from the first oil control valve toward the first wall and may provide the fluid communication between the first port of the oil control valve and the first oil passage in the cylinder head.

Abstract: An engine assembly may define first and second combustion chamber and may include a camshaft having a first lobe region engaged with the first valve arrangement and a second lobe region engaged with the second valve arrangement and rotatable relative to the first lobe region. The cam phaser may be coupled to the camshaft and may include a first member and a second member rotatable relative to the first member. The first lobe region may be fixed for rotation with the first member and the second lobe region may be fixed for rotation with the second member to vary valve timing for the second combustion chamber independently from the valve timing of the first combustion chamber.

Abstract: An impeller, which is rotatable about an axis, includes an inlet shroud and a backing plate. An inlet orifice is defined by the inlet shroud, and a plurality of outlet orifices are radially outward of the inlet orifice. A plurality of vanes are disposed between the inlet shroud and the backing plate. The vanes are formed integrally as one-piece with the inlet shroud.

Abstract: A crankshaft for an internal combustion engine comprises at least five main journals aligned on a crankshaft axis of rotation and at least eight crankpins, each of the crankpins being disposed about a respective crankpin axis and positioned between the main journals. Each of the respective crankpin axes is oriented parallel to, and spaced radially from, the crankshaft axis of rotation. Each of the crankpins is joined to a pair of crank arms for force transmission between each of the crankpins and the respective crank arms. Each crank arm is joined to a respective main journal for transmitting torque between the crank arm and the main journal. At least four of the crankpins are spaced radially a first semi-stroke distance from the crankshaft axis of rotation, and at least four remaining crankpins are spaced radially a second semi-stroke distance from the crankshaft axis of rotation.

Abstract: An engine assembly may include an engine block, a first piston, a second piston, and a cylinder head. The cylinder head and the engine block may define a first combustion chamber and a second combustion chamber. The cylinder head may define a first intake port and a second intake port. The first intake port may be in communication with the first combustion chamber and may include a first inlet extending through an upper surface of the cylinder head. The second intake port may be in communication with the second combustion chamber and may include a second inlet extending through a side of the cylinder head.

Abstract: An engine assembly may include an engine structure, a first valve, a first valve lift mechanism and a first camshaft. The engine structure may define a first combustion chamber and a first port in communication with the first combustion chamber. The first valve may be located in the first port and the first valve lift mechanism may be engaged with the first valve. The first camshaft may be rotationally supported on the engine structure and may include a first double lobe engaged with the first valve lift mechanism. The first double lobe may define a first valve opening region including a first peak and a second valve opening region including a second peak rotationally offset from the first peak.

Abstract: A crankshaft for an internal combustion engine comprises at least four main journals aligned on a crankshaft axis of rotation and at least six crankpins, each being disposed about a respective crankpin axis and positioned between the at least four main journals. Each of the respective crankpin axes is oriented parallel to, and spaced radially from, the crankshaft axis of rotation. Each of the at least six crankpins is joined to a pair of crank arms for force transmission between each of the at least six crankpins and the respective pair of crank arms. Each crank arm is joined to a respective main journal for transmitting torque between the crank arm and the main journal. The at least six crankpins are disposed asymmetrically about the crankshaft axis of rotation.

Abstract: A crankshaft for an internal combustion engine comprises at least five main journals aligned on a crankshaft axis of rotation and at least eight crankpins, each of the crankpins being disposed about a respective crankpin axis and positioned between the main journals. Each of the respective crankpin axes is oriented parallel to, and spaced radially from, the crankshaft axis of rotation. Each of the crankpins is joined to a pair of crank arms for force transmission between each of the crankpins and the respective crank arms. Each crank arm is joined to a respective main journal for transmitting torque between the crank arm and the main journal. At least four of the crankpins are spaced radially a first semi-stroke distance from the crankshaft axis of rotation, and at least four remaining crankpins are spaced radially a second semi-stroke distance from the crankshaft axis of rotation.

Abstract: A turbocharger assembly for an internal combustion engine includes a bypass valve for controlling a flow of exhaust gas from a second group of exhaust ports of a cylinder head assembly. When disposed in an open position, the bypass valve allows exhaust gas from the second group of exhaust ports to combine with exhaust gas from a first group of exhaust ports to spin a turbine of the turbocharger assembly. When disposed in a closed position, the bypass valve forces the exhaust gas from the second group of exhaust ports through an Exhaust Gas Recirculation (EGR) passage to an intake manifold to establish a dedicated EGR system.

Abstract: An intake assembly for a 3-cylinder, V-configured engine comprises an intake manifold configured to conduct combustion air to a first, two-cylinder, cylinder head housing assembly and a second, single-cylinder, cylinder head housing assembly. A centrally extending plenum defines a plenum axis. A first plurality of intake runners, in fluid communication with the plenum, extend from a front side and transition through a circumferential arc around an upper side to deliver combustion air to, the first, two-cylinder, cylinder head housing assembly. A single intake runner, in fluid communication with the centrally extending plenum, extends from a rear side and transitions through a circumferential arc around the upper side to deliver combustion air to, the second, single-cylinder, cylinder head housing assembly. A zip tube delivers combustion air to the central plenum at a location that is between one of the first plurality of intake runners and the single cylinder intake runner.

Abstract: A crankshaft for an internal combustion engine comprises at least four main journals aligned on a crankshaft axis of rotation and at least three crankpins, each crankpin being disposed about a respective crankpin axis and positioned between the main journals. Each of the respective crankpin axes is oriented parallel to, and spaced radially from, the crankshaft axis of rotation. Each of the crankpins is joined to a pair of crank arms for force transmission between the crankpin and the pair of crank arms. Each pair of crank arms is joined to a respective main journal for transmitting torque between the pair of crank arms and the main journal. At least two of the crankpins are spaced radially a first semi-stroke distance from the crankshaft axis of rotation, and a third crankpin is spaced radially a second semi-stroke distance from the crankshaft axis of rotation.

Abstract: A crankshaft for an internal combustion engine comprises at least four main journals aligned on a crankshaft axis of rotation and at least three crankpins, each disposed about a respective crankpin axis and positioned between the main journals. Each of the respective crankpin axes is oriented parallel to, and spaced radially from, the crankshaft axis of rotation. Each of the crankpins is joined to a pair of crank arms for force transmission between the crankpin and the pair of crank arms. Each pair of crank arms is joined to a respective main journal for transmitting torque between the pair of crank arms and the main journal. At least two of the crankpins are positioned substantially in phase with one another and a third crankpin being positioned approximately 180 degrees apart from the at least two crankpins.

Abstract: An intake manifold assembly for an internal combustion engine of a vehicle includes a plenum, a plurality of lower runners coupled to and in fluid communication with the plenum, and a plurality of upper runners. Each of the upper runners is coupled to and in fluid communication with one of the lower runners. The plurality of upper runners includes a single dedicated upper EGR runner configured for supplying combustion air to at least two dedicated EGR cylinders. A primary throttle body is coupled to the plenum and configured for regulating a flow rate of compressed combustion air through the plenum. An EGR throttle body is coupled to the dedicated upper EGR runner and configured for regulating a flow rate of the compressed combustion air through the dedicated upper EGR runner to control the flow rate of the compressed combustion air to the dedicated EGR cylinders.

Abstract: A camshaft assembly may include a monolithic camshaft body, a journal member and a thrust ring. The monolithic camshaft body may define lobes and journal regions along an axial extent thereof. The journal member may be separate from and fixed to an axial end of the camshaft body adjacent an end lobe of the camshaft body. The thrust ring may be axially secured to the camshaft assembly at the axial end of the camshaft body.

Abstract: An engine assembly includes an engine block defining a first cylinder bore, a second cylinder bore directly adjacent to the first cylinder bore and a third cylinder bore directly adjacent to the second cylinder bore. The engine block defines a first distance from a diametrical center of the first cylinder bore to a diametrical center of the second cylinder bore and defines a second distance from the diametrical center of the second cylinder bore to a diametrical center of the third cylinder bore. The first distance is different than the second distance.